近年来铁棍山药颇受人们追捧,在一些特产店里,河南铁棍山药每斤卖到20元。很多人都认为,它价格贵是因为它营养价值高,还有抗癌、降血糖等功效。铁棍山药真有那么神吗?山药种类很多,从植物学角度看,目前我国的山药可大致分为两个种类:普通山药与怀山药,共有40多个山药品种,包括太谷山药、铁棍山药。铁棍山药属于怀山药的一种,主要产自河南一带。由于种植环境和技术等因素的限制,铁棍山药的产量往往 Iron popular in recent years, popular yam sticks, in some specialty stores, Henan Iron Stick Yam catty sold 20 yuan. Many people think that it is expensive because of its high nutritional value, as well as anti-cancer, lowering blood sugar and other effects. Yam Yum really so god? Yam many types, from a botanical point of view, at present, China’s yam can be broadly divided into two categories: ordinary yam and yam, a total of more than 40 varieties of yam, including Taigu yam, iron Yam. Iron stick yam is a kind of yam, mainly produced in Henan area. Due to the planting environment and technology and other factors, the production of iron stick yam is often